Question: Has the USSC ever reversed itself?
Yes.
Plessy v. Ferguson established the doctrine of "separate but equal" accomodations based on skin color.
Brown v. Board of Education threw out that doctrine.
Note that the case that threw it out was Brown v. Board of Education, and not Plessy v. Ferguson Mulligan. The Court needed a new case and a new cause of action to overturn Plessy.
There will be a Brown v. Board of Education for abortion. It will not be a Mulligan on Roe v. Wade--that case is closed and over with.